2055478656 has 192 divisors, whose sum is σ = 6929357760. Its totient is φ = 533836800.

The previous prime is 2055478627. The next prime is 2055478661. The reversal of 2055478656 is 6568745502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202011 + ... + 211941.

It is an arithmetic number, because the mean of its divisors is an integer number (36090405).

Almost surely, 2^2055478656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2055478656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3464678880).

2055478656 is an abundant number, since it is smaller than the sum of its proper divisors (4873879104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2055478656 is a wasteful number, since it uses less digits than its factorization.

2055478656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973 (or 9954 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The square root of 2055478656 is about 45337.3869560212. The cubic root of 2055478656 is about 1271.4647484960.

The spelling of 2055478656 in words is "two billion, fifty-five million, four hundred seventy-eight thousand, six hundred fifty-six".